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Anorthoclase

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SYA619028

Anorthoclase

rare locality

Description Tabs

Description
Locality: 
Mount Erebus, Ross Island, Victoria Land, Eastern Antarctica, Antarctica
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.4 × 0.8 cm
Largest Crystal: 
1.50cm
Description

A sharp single grey to dark grey colored anorthoclase crystal from a rarely offerd locality.

Mineral Data
What's on the rock

Anorthoclase

Polymorph of: 
Formula: 
(Na,K)AlSi3O8
Group Parent: 
Feldspar Group
Strunz: 
9.FA.30*
Crystal System: 
Triclinic
Hardness: 
6 - 6.5
Colour: 
white, colourless, greyish pink
Streak: 
white
Type Locality: 
Pantelleria Island, Trapani Province, Sicily, Italy

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